grassley of iowa. >> just in the last decade, technological advancements have revolutionized aviation to make this technology cheaper and more readily available. >> sreenivasan: similar to state and local governments, chief among the committee's concerns: privacy. amie stepanovich was one of the witnesses who testified before the committee. >> the privacy laws that do exist are very targeted, the approach that the united states has taken to privacy, and they don't encompass the type of surveillance that drones are able to conduct, and because of >> sreenivasan: stepanovich works at the electronic privacy information center or epic, a non-profit in washington d.c. >> we want to see legislation that addresses aerial surveillance as a whole. that doesn't necessarily look at what technology is available on the market now, but what could be available, what has been available and addresses that in a way that's not going to be out-of-date in a couple of years. >> sreenivasan: last month, epic petitioned the bureau of customs and border protection to suspend its domestic drone surveillance pr